I recently changed my caps lock + hjkl to be the arrow keys system wide and act as command-option-shift-Ctrl+ whatever key you press. And finally f18 if pressed

I recently changed my caps lock + hjkl to be the arrow keys system wide and act as command-option-shift-Ctrl+ whatever key you press. And finally f18 if pressed and released by itself(though you could map it to escape instead). In vim(well spacemacs) I have jk and kj set to escape so I can exit out of insert mode by just mashing those two keys on home row. This is the best setup I have ever used. To get caps locks on I have it set to toggle if I press right shift and caps locks.